National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Overcast

23°F

-5°C

Humidity 68%
Wind Speed N 5 mph
Barometer 30.09 in (1019.2 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 26 Dec 3:56 pm EST
Extended Forecast for

South Dennis MA

  • Tonight

    Tonight: Snow likely, mainly after midnight. Cloudy, with a low around 22. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 22 °F

    Snow Likely

  • Saturday

    Saturday: A chance of snow, mainly before 11am. Mostly cloudy, with a high near 33. North wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.

    High: 33 °F

    Chance Snow
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 23. North wind around 6 mph.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 39. Northwest wind 5 to 7 mph.

    High: 39 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 31. Southwest wind 3 to 6 mph. Chance of precipitation is 80%.

    Low: 31 °F

    Slight Chance
    Rain then
    Rain

  • Monday

    Monday: Rain. High near 48. South wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 100%.

    High: 48 °F

    Rain

  • Monday Night

    Monday Night: Rain likely, mainly before 9pm. Mostly cloudy, with a low around 25. West wind 10 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 70%.

    Low: 25 °F

    Rain Likely
    then Chance
    Rain

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34. West wind 14 to 16 mph, with gusts as high as 31 mph.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 23. West wind 11 to 14 mph, with gusts as high as 30 mph.

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow likely, mainly after midnight. Cloudy, with a low around 22. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 2 inches possible.
Saturday
A chance of snow, mainly before 11am. Mostly cloudy, with a high near 33. North wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
Saturday Night
Mostly clear, with a low around 23. North wind around 6 mph.
Sunday
Mostly sunny, with a high near 39. Northwest wind 5 to 7 mph.
Sunday Night
Rain, mainly after 2am. Low around 31. Southwest wind 3 to 6 mph. Chance of precipitation is 80%.
Monday
Rain. High near 48. South wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 100%.
Monday Night
Rain likely, mainly before 9pm. Mostly cloudy, with a low around 25. West wind 10 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 70%.
Tuesday
Mostly sunny, with a high near 34. West wind 14 to 16 mph, with gusts as high as 31 mph.
Tuesday Night
Mostly cloudy, with a low around 23. West wind 11 to 14 mph, with gusts as high as 30 mph.
Wednesday
Mostly sunny, with a high near 36. West wind 11 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly cloudy, with a low around 23. West wind 8 to 10 mph, with gusts as high as 22 mph.
New Year's Day
A chance of snow. Mostly cloudy, with a high near 34. West wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Thursday Night
A chance of snow. Partly cloudy, with a low around 16. West wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 27. West wind 8 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
1:56 pm EST Dec 26, 2025
Forecast Valid:
4pm EST Dec 26, 2025-6pm EST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation